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Journal of Thermal Science 2024年第4期33卷 1554-1563页

作者： JI Zengcai song guoliang TANG Zihua SUN Liwei State Key Laboratory of Coal Conversion Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Dalian National Laboratory for Clean Energy Dalian116023China

Solid particle heat storage technology offers a potential solution to the challenges posed by the significant growth of renewable energy sources,particularly in terms of grid security and ***,it has the capability to optimize the energy utilization efficiency of the power *** order to investigate the transport regulation characteristics of solid particles in the thermal storage and release system of a circulating fluidized bed(CFB),a test rig with a capacity of 0.1 MW(th)was *** rig was utilized to systematically study the transport regulation characteristics of solid particles under the double U-type valve feed structure and U-type valve discharge *** experimental findings indicate that the system's design enables efficient and rapid storage and release of solid particles in the *** air distribution mode,specifically the double U-type valve feed structure and the U-type valve discharge structure,significantly influence the feed and discharge characteristics of the ash storage *** was observed that the impact of loose air on these characteristics is more substantial than that of the return air,irrespective of the feed structure or the return *** adjusting the feed and discharge rate,it is recommended to adopt a scheme that involves coarse adjustment through loose air and fine adjustment through return air.

关键词： solid particle thermal storage air distribution mode transport regulation

Effect of structural characteristics on the transport characteristics of solid particles in the thermal storage and release system of circulating fluidized bed

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Particuology 2024年第6期89卷 22-31页

作者： Zengcai Ji guoliang song Zihua Tang Liwei Sun Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Dalian National Laboratory for Clean Energy Dalian116023China

Coal-fired power generation stands as the most economically viable modulating power source in present-day *** holds the potential to offer prospective solutions to the challenges posed by the rapid expansion of intermittent,unpredictable,and unstable renewable energy *** particle thermal storage technology emerges as an effective means to enhance the flexibility of coal-fired circulating fluidized bed power *** attain an optimized structure for the solid particle thermal storage and release system in circulating fluidized bed units,experimental research was conducted on a 0.1 MWth circulating fluidized bed test *** study delved into the impact of ash storage bin geometries and the shapes of their feed-discharge valves on the control properties of solid particle *** experimental outcomes reveal that employing inverted m-shaped valve and dual U-shaped valves for feed control,alongside U-shaped valves and N-shaped valves for discharge control,both enable efficient and rapid storage and release of solid particles within the circulating fluidized *** similar air distribution conditions,the inverted m-shaped valve exhibits lower conveying energy consumption than the dual U-shaped valves,while the N-shaped valve excels in control characteristics over the U-shaped ***,the inverted m-shaped valve and the N-shaped valve demonstrate optimal overflow port heights,and the ash storage bin exhibits an optimum height-to-diameter ratio.

关键词： Solid particle Thermal storage System structure Transport regulation

Influence of Operating Parameters on NO_(x)and SO_(2)Emissions in Circulating Fluidized Bed with Post-Combustion

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Journal of Thermal Science 2023年第5期32卷 1858-1867页

作者： WANG Chao song guoliang CHEN Rui JIANG Yu LYU Qinggang School of Engineering Science University of Science&Technology of ChinaHefei 230026China Institute of Engineering Thermophysics Chinese Academy of ScienceBeijing 100190China University of Chinese Academy of Science Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China

Post-combustion technology of circulating fluidized bed can largely reduce the emission of nitrogen oxides(NOx)in the process of combustion and succeed in meeting the ultra-low NO_(x)standard for some fuels like Shenmu *** the potential of synergistic control of the emissions of NO_(x)and sulphur dioxide(SO_(2))under post-combustion technology has become a direction that needs further *** experiments were conducted on a 0.1 MW(thermal)circulating fluidized bed(CFB)test platform,composed of a CFB main combustor and post-combustion chamber(PCC).The paper focuses on the effects of air distribution ratio and temperature in CFB and limestone addition on NO_(x)and SO_(2)*** experimental results showed that compared with traditional CFB combustion,post-combustion technology can reduce NO_(x)emission largely,but lead to a slight increase in SO_(2)*** higher SO_(2)emissions at post-combustion can lead to less NO_(x)*** the decrease inλ_(CFB),NO_(x)emission first decreased and then increased;by contrast,SO_(2)emission withλ_(CFB)first increased and then *** post-combustion,whenλ_(CFB)was 0.9,NO_(x)emission was the minimum,while the SO_(2)emission was the *** temperature and limestone addition has less adverse effects on NO_(x)emission under post-combustion,compared with traditional CFB *** injection into the furnace is applicable under post-combustion,and the sulfur removal efficiency under post-combustion is very high,almost equivalent to that under traditional combustion.

关键词： circulating fluidized bed post-combustion NO_(x) SO_(2) synergistic control

Experiment Study on the High-Temperature Thermal Treatment and Ultra-Low NOx Control of Solid Waste Coal Slime in Circulating Fluidized Bed

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Journal of Thermal Science 2022年第6期31卷 2244-2251页

作者： song guoliang XIAO Yuan YANG Zhao YANG Xueting LYU Qinggang Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China

Coal slime is a kind of solid waste and inferior fuel, which is urgently needed to utilize. In this paper, a high-temperature thermal treatment of coal slime in a circulating fluidized bed(CFB) was attempted to achieve resource utilization. In the experiment, the combustion characteristics of dried coal slime during high-temperature thermal treatment were investigated in a 0.5 MW pilot-scale CFB. The stable fluidized combustion of dried coal slime was realized. When the excess air ratio was closer to 1.0, the furnace temperatures would be uniform. The ignition method of dried coal slime was changed correspondingly while the feeding position changed. However, feeding coal slime to the loop seal was instrumental in decreasing NO_(x) emissions. Moreover, the NO_(x) emissions were tried to further control by the post-combustion technology. Post-combustion technology could significantly reduce NO_(x) emissions below 50 mg·Nm^(-3) while ensuring combustion efficiency. Besides, it was found that there was an optimum excess air ratio in CFB of about 0.9 resulting in minimum NO_(x) emissions of coal slime. The experiment results could well guide the industrial-scale high temperature thermal treatment of coal slime.

关键词： solid waste coal slime thermal treatment CFB NOx post-combustion

Experimental study on variable load regulation of circulating fluidized bed with high temperature preheated activated fuel

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PARTICUOLOGY 2024年第12期95卷 178-188页

作者： song, Weijian Tang, Zihua song, guoliang Zhu, Jianguo Liu, Jingzhang Wang, Haiyang Zhang, Yinjiang Chinese Acad Sci Inst Engn Thermophys State Key Lab Coal Convers Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Datong Inst Coal Clean & Efficient Utilizat Datong 037000 Peoples R China

The circulating fluidized bed (CFB) boiler is an essential option, serving as a flexible power source. However, it is notable that CFB boilers exhibit noticeable limitations in rapid load changes. This study delved into the impact of fuel characteristics on CFB load change rate, combustion efficiency, and original NOx emissions using a 2 MW CFB experimental platform. The findings revealed that blending pulverized coal or modified fuel positively influenced the improvement of CFB load change rate, with blending modified fuel showing a more significant effect. Blending the modified fuel and pulverized coal increased the load change rate within the 50%-100% range by 164.4% and 57.3%, respectively. Additionally, blending pulverized coal and modified fuel significantly reduced NOx emissions, although there remained room for improvement in combustion efficiency. Compared to conventional combustion, blending pulverized coal and blending modified fuel decreased NOx emissions by 35.9% and 41.4% at 100% load, respectively. (c) 2024 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： Circulating fluidized bed Pulverized coal Modified char Coal gas Load change rate NO x emission

Experimental Study on the Effect of Bed Material Amount and Fuel Particle Size on Load Change of Circulating Fluidized Bed

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Journal of Thermal Science 2023年第5期32卷 1758-1770页

作者： TANG Zihua song guoliang JIANG Yu YANG Xueting JI Zengcai SUN Liwei Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China

The large-scale integration of new energy generation has put forward higher requirements for the peak-shaving capability of thermal *** circulating fluidized bed(CFB)depends on the advantages of a wide load adjustment range and low cost of pollutant control to become a good peak shaving power ***,the large delay and inertia caused by its unique combustion mode make it very difficult to change the load *** further understand the factors that affect the load change of CFB,and explore the method of increasing CFB load change rate,the load change experiment on the combustion side was carried out in the 0.1 MW CFB experiment *** influence law of bed material amount and fuel particle size on load change of CFB combustion side was revealed for the first *** results indicated that the increase of bed material amount was beneficial to improve the load change rate on the combustion side of CFB and reduce the carbon content of fly ash,but had no obvious effect on NO_(x)*** the bed height at rest increased from 200 mm to 400 mm,the load change rate of the CFB combustion side load from 50%to 75%increased from 0.78%/min to 1.14%/min,and the carbon content of fly ash at 75%load decreased from 26.6%to 24.9%.In addition,the reduction of fuel particle size positively improved the load change rate on the combustion side of the CFB and reduced NO_(x)emission but had a negative effect on reducing the carbon content of fly *** the fuel particle size decreased from 0-1 mm to 0-0.12 mm,the load change rate of CFB combustion side load from 50%to 75%increased from 0.78%/min to 1.09%/min,and the NO_(x)emission and carbon content of fly ash at 75%load decreased from 349.5 mg/m^(3)to 194.1 mg/m^(3)and increased from 26.6%to 31.8%,respectively.

关键词： circulating fluidized bed load change rate bed material amount fuel particle size combustion characteristics emission characteristics

Combustion and NO_(x)Emission Characteristics of Coal Slime Solid Waste at Different Feeding Positions

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Journal of Thermal Science 2023年第6期32卷 2351-2360页

作者： YANG Xueting song guoliang YANG Zhao WANG Chao JI Zengcai ZHANG Xingshun Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Dalian National Laboratory for Clean Energy Dalian116023China School of Engineering Science University of Science&Technology of ChinaHefei230026China Shandong Huaju Energy Co.Ltd Jining273500China

The NO_(x)emission of coal slime burned in circulating fluidized bed(CFB)boilers could hardly meet the increasingly strict standards in *** coal slime from the top of furnace led to uneven combustion in furnace and cyclones,short residence time and overheated tail heating *** effects of feeding positions on the combustion uniformity and pollutant emission characteristics of coal slime were *** experimental results showed that the coal slime combustion was more uniform when feeding from the front wall and longer residence time was conducive to the control of NO_(x)*** the boiler temperature and excess air ratio were almost identical,the initial NO_(x)emissions were 45.0 mg·m^(−3)and 70.7 mg·m^(−3)when feeding from the front wall and the top of furnace,respectively;the NO_(x)emission was cut down 36.35%when feeding from the front wall,successfully meeting the ultra-low NO_(x)emission standard of *** adoption of feeding from the front wall greatly reduced the original emission of NO_(x);the operation costs in the practical applications were saved to a large extent.

关键词： solid waste coal slime CFB boiler ultra-low NO_(x)emission feeding positions combustion uniformity

Strain rate sensitivity of tensile properties in high Nb containing TiAl alloys

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Journal of University of Science and Technology Beijing 2005年第6期12卷 535-539页

作者： Jianfeng Gao Xiangjun Xu Junpin Lin Xiping song Yanli Wang guoliang Chen State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The effect of strain rate on the yield strength of high Nb containing TiAl alloy was studied. The results show that the strain rate sensitivity varies with the test temperature, and the yield strength is not sensitive to the strain rate at room temperature but significantly sensitive to the strain rate at high temperature. An increase of the strain rate or a decrease of the temperature results in an obvious change of fracture mode. It is found that the strain rate sensitivity of this alloy varying with temperature is due to the dislocation climb generated at high temperature.

关键词： TiAl alloys strain rate tensile properties thermal activation

Influence of Limestone Addition on Combustion and Emission Characteristics of Coal Slime in the 75 t/h CFB Boiler with Post-Combustion Chamber

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Journal of Thermal Science 2023年第5期32卷 1849-1857页

作者： WANG Chao song guoliang YANG Zhao XIAO Yuan YANG Xueting JI Zengcai LYU Qinggang Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China School of Engineering Science University of Science&Technology of ChinaHefei 230026China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China

Coal slime can be disposed in quantity and fully utilized in a well-designed circulating fluidized bed(CFB)boiler,but the nitrogen oxides(NO_(x))and sulphur dioxide(SO_(2))emissions generated in the combustion of coal slime have contributed to serious atmospheric *** Temperature&Post-combustion Technology,a novel and high-efficient way to reduce the NO_(x)emission in the process of combustion,is applied to a 75 t/h CFB boiler burning exclusively coal slime,which will succeed to meet the ultra-low NO_(x)emission *** further explore an appropriate method to reduce the SO_(2)emission under the condition of new technology,the experiments were conducted on a 75 t/h CFB boiler with post-combustion chamber to study the influence of limestone addition on the combustion and emission characteristics of coal *** experimental results showed that High Temperature&Post-combustion Technology combined with the sorbent injection in the furnace is a very promising technology to control the NO_(x)and SO_(2)emissions *** addition can cause the slight decrease in combustion *** addition will lead to the increase in NO_(x)emission in the combustion of coal *** 75 t/h coal slime CFB boiler,the desulfurization efficiency of limestone injection in furnace is close to 98%,achieving the ultra-low SO_(2)*** meet the standard of ultra-low NO_(x)and SO_(2)emission,the two technologies for simultaneous removal of NO_(x)and SO_(2)emissions are economical and feasible currently:Removal of SO_(2)under ultra-low NO_(x)emission and Removal of NO_(x)under ultra-low SO_(2)emission.

关键词： coal slime CFB boiler NO_(x) SO_(2) limestone simultaneous removal

Effect of Different Loadings on the Performance of Ni2P/Al2O3 Catalysts for Low-Temperature Thioethering and Selective Hydrogenation of Diolefins in Liquefied Petroleum Gas

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China Petroleum Processing & Petrochemical Technology 2023年第1期25卷 79-90页

作者： Xiao Han Sun Jinru song guoliang Xie Xianna Ke Ming Tong Yanbing Zhao Zhiping Wang Zijian Li Jiahan CNOOC CenerTech Tianjin Chemical Research and Design Institute Co LtdTianjin 300131China State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil&Gas Pollution Control China University of PetroleumBeijing 102249China

In this study,different loadings of x%Ni_(2)P/γ-Al_(2)O_(3)(x=6%,9%,12%,15%,18%)catalysts with aluminum oxide(Al_(2)O_(3))as the carrier,nickel chloride(NiCl2)as the nickel(Ni)source,and ammonium hypophosphite(NH_(4)H_(2)PO_(2))as the phosphorus(P)source were prepared by the equal volume impregnation method to investigate the effects of different loadings on the performance of the selective hydrogenation of diolefins and thiol etherification in *** physicochemical properties of the catalysts were characterized by XRD,BET,SEM,TEM,H_(2)-TPR,and XPS,and the catalytic activity of the catalysts was evaluated in a fixed-bed *** results showed that a change in the loading affected the catalyst crystalline phase structure and size,specific surface area,P coverage,active phase dispersion,and catalytic *** 6%,9%,and 12%loadings the catalysts had an Ni phase but there was no obvious Ni_(2)P phase in the nickel phosphide;at 15%loading a single Ni_(2)P phase was obtained,and at 18%loading both Ni_(2)P and Ni1_(2)P_(5) phases *** was a P enrichment on the catalyst surface,and the higher the loading the more P species were enriched on the surface,but some of the P was lost during the catalyst reduction process due to the production of phosphine(PH3)*** 15%Ni_(2)P/γ-Al_(2)O_(3) catalyst had the largest Ni/Al ratio and the best *** Ni_(2)P active phase size was small at about 4.25 nm and Ni_(2)P was uniformly dispersed on the catalyst surface without *** 15%Ni_(2)P/γ-Al_(2)O_(3) catalyst had the best catalytic activity at a pressure of 2.0 MPa,a liquid hourly space velocity(LHSV)of 3.0 h-1,and a hydrogen to hydrocarbon ratio of *** 1,3-butadiene conversion was 97.45%and the methanethiol removal was 100%at a temperature of 140℃.

关键词： Ni_(2)P dispersion low-temperature thioethering selective hydrogenation of diolefins